16 Transactions of the 



The President announced that the Committee had elected F. L. 

 Peck and T. R. Montgomery members of the Society. 



The President then delivered an address, alluding to the objects 

 of the Society, and the manner in which he wished these to be 

 carried out. He next read the following paper on 



STREPTORHYNCUS KELLII. 

 M'Coy. 



The shells which I now pass round were found in the quarry 

 at the foot of the gully leading down to the river from the Downs. 

 The rock is Oolitic limestone, and belongs to the lower portion of 

 the Carboniferous limestone, but above the Black Eock. These 

 specimens, and one of them in particular, are important, as settling 

 a disputed point between Davidson, aixthor of the ' Monograph on 

 British Carboniferous Brachiopods,' and Professor M'Coy. They 

 belong to the genus Streptorhjmcus, of the class of Brachiopods. 

 Streptorhyncus crenistria is a very common shell in the Carboni- 

 ferous or Mountain limestone, and is thus described by Davidson : 

 — ' Very variable in shape ; hinge-line straight, slightly exceeding 

 or somewhat shorter than the greatest width of the shell ; cardinal 

 angles rounded or prolonged, with acute terminations; ventral 

 valve variable in its curves, flat in middle, or more or less convex 

 throughout; dorsal valve moderately or extremely convex ; surface 

 of botli valves covered with numerous strong, radiating, rounded 

 striae, with flattened interspaces of variable width, the ribs and 

 interspaces being at the same time intersected by fine concentric 

 lines, giving to the longitudinal ones a crenulated appearance. 

 Dimensions very variable.' You will observe that the shape, 

 length of hinge-line, cardinal angles, curvature of valves, fineness 

 of ribs, and size are all variable in undoubted specimens of Strep- 

 torhyncus crenistria. 



Professor M'Coy made a new species of certain shells of this 

 genus which are found at Clifton in the Black Rock, in Scotland 

 and Ireland, and which he named Streptorhyncus Kellii. It 

 differs from the former in these respects : — 



1. Presence of deep, rounded mesial furrow. 



2. Cardinal angles always rounded, 



3. The ribs are finer and closer, though he says this character 



is not of much value. 



4. Smaller in size, never exceeding two inches in length. 



5. More convex. He lays most stress on the first two of these 



differences. 



